# ODK enketo form preview failing to load error (Could not connect with Form Server)

**URL:** <https://forum.getodk.org/t/odk-enketo-form-preview-failing-to-load-error-could-not-connect-with-form-server/55033>\
**Category:** Support\
**Tags:** odk-central, enketo\
**Created:** [May 26, 2025, 4:19pm UTC](https://forum.getodk.org/t/odk-enketo-form-preview-failing-to-load-error-could-not-connect-with-form-server/55033 "2025-05-26T16:19:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jniles](https://getodk.b-cdn.net/user_avatar/forum.getodk.org/jniles/32/2819_2.png) [@jniles](https://forum.getodk.org/u/jniles)\
**Post date:** [May 30, 2025, 7:31pm UTC](https://forum.getodk.org/t/odk-enketo-form-preview-failing-to-load-error-could-not-connect-with-form-server/55033/2 "2025-05-30T19:31:42Z")

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Hi @Jonas_George ,

This looks very familiar to what I ran into a few years ago: [Forms not downloading or rendering on reverse-proxied, tunneled ODK Central server](https://forum.getodk.org/t/forms-not-downloading-or-rendering-on-reverse-proxied-tunneled-odk-central-server/43367)

Have you looked into that thread to see if any of the suggestions there work?

Additionally, [this page](https://docs.getodk.org/central-troubleshooting/#preview-could-not-connect-with-server) in the documentation may also help.

A couple of questions:

1. Can you download forms using a mobile device? This will tell you if it is limited to Enketo or generally an issue with the XLSForms.
2. Have you tried looking at the docker compose logs to see where the error originates from?

Best of luck!

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